Hanger for extension-lamps



(No Model.)

GQB. SOVEREIGN. HANGER FOR EXTENSION LAMPS.

No. 349,909. Patented Sept. 28, 1886.

EW/mm as UNITED STATES ATENT Erica.

GEORGE E. SOVEREIGN, OF POTTERSVILLE, NE\V JERSEY.

HANGER FOR EXTENSION-LAMPS.

SPECIFICATION forming part of Letters Patent No. 349,909, datedSeptember 28, 1886.

Application filed June 8, 1886.

To aZZ whom it may concern.-

Be it known that I, GEORGE E. SOVEREIGN, a citizen of the United States,residing at Pottersville, in the county of Hunterdon and State of NewJersey, have invented a new and useful Improvement in Hangers forExtension- Lamps, of which the following is a specification.

My inventionrelates to an improvement in hangers for extension-lamps;and it consists in the peculiar construction and combination of devicesthat will be more fully set forth hereinafter, and particularly pointedout in the claims.

In the drawings, Figure 1 is a side elevation of a lamp-hanger embodyingmy improvement. Fig. 2 is a vertical longitudinal sectional view of thesame. Fig. 8 is a vertical transverse sectional view on the line a: m ofFig. 2. Fig. 4 is an end elevation. Figs-5 and 6 show a modification.Fig. 7 is a detailed perspective view of one end ofthe frame, showingthe removable block and the bracket detached therefrom.

The object of my invention is to provide a hanger for extensionlampsthat will enable the lamp to be raised or lowered to any desired height.This object I attain by the mechanism herein described.

A represents a cast frame,whieh is provided on its upper side withperforated ears B for the attachment of suspending-chains, which suspendthe frame from the ceiling or other object. One of the end walls of theframe is provided with an inwardlyextending horizontal hollow stud, O.The other end wall of the frame is provided with a transverse opening,D, which aligns with the central opening in the stud. -A slot, E,extends from the opening D to the lower side of the end wall of theframe, the sides of the said slot being curved in the same direction, asat e,- and in the said slot is fitted a removable block, F, the sides ofwhich are curved, as at f, and thereby adapted to fit snugly in thecurved sides of the slot and secure the said block firmly therein.

G represents a roller, one end of which is journaled in the opening D,and the other end of which is journaled in the hollow stud O. The saidroller is provided at opposite extremities with drums H and I. The drumI is provided with apair of gravity catches or Serial No. 204,498. (Nomodel.)

dogs, K, which are pivoted on the outer side of the said drum' and onopposite sides of the center thereof 5 and the said dogs are providedwith projections k, adapted to enter an opening, a, which is made in theupper side of the hollow stud O.

L represents a spring which is coiled around the roller G, and has oneend attached firmly to one side of the frame. The opposite end of thesaid coiled spring is attached to the drum I.

To the end walls of the frame are attached depending brackets M by meansof dowelpins N, which enter openings made in the end walls of the frame.In the said brackets, at the lower ends thereof, is journaled a shaft,0, the ends of which are provided with screwthreads. The thread at oneend is right-handed, and the thread at the opposite extremity oftheshaft is left-handed, as shown; and the pitch of these th readscorresponds to the thickness of elevating-chains It, which are attachedto the drums I and H, and are wrapped once around the threaded ends ofthe shafts O and depend therefrom. A bar, S, is attached to the lowerends of the elevating-chains R, and from the said bar is suspended thelamp in any suitable manner.

The operation of my invention is as follows: The lamp is sustained atany desired elevation normally by one of the dogs'K engaging with therecess 0 in the frame, thereby preventing the roller having the drumsfrom rotating. The elevating-chains are coiled on the drums in thereverse direction from that in which the spring is coiled on the roller,so that when the elevating-chains are uncoiled from the drum in loweringthe lamp the spring wiii be more tightly coiled on the roller, and viceversa. The function of the shaft 0, having the right and left handthreads, is to rotate as the lamp is raised or lowered, thereby causingthe threads around which the elevating-chains are coiled to move thesaid chains laterally, and thus dispose them properly on the drum whenthe chains are being coiled thereon, and prevent the chains frombecoming crossed and entangled on the drums.

In order to raise or lower the lamp a slight pull is first made on theelevating-chains by grasping the bar S or the lamp, so as to trip thedogs and disengage them from the opening a, when the lamp will be freeto rise or descend, as will be very readily understood. By making thedrums of sufficient capacity and the spring and the elevating-chains ofsufiicient length the lamp may be raised or lowered to any desiredextent, so as to bring the light near the eyes of .a person seated inthe room, or to elevate it nearly to the ceiling, as may be desired.

Suspended lamps are sometimes of considerable weight, more than thecapacity of the form of my invention, hereinbefore described, tosustain. In order, therefore, to adapt the inventionfor use with heavylamps I propose to construct it as shown in Figs. 4 and 5, in which Iprovide the frame or case with two sections arranged side by side. Theperforated ears B, for the attachment of suspendi ng- I chains, arelocated on the upper sideof the,

frame, at the-center thereof, between the two sections, and the bracketsM depend from the ends of the frame and also at the center-thereof, thussupporting the right and left hand threaded shaft directly below thecenter'of the frame. The roller G, with the spring, the

drums, and the dogs, is journaled in one section of the case, and inthe-other sectionthereof, and arranged parallel with the roller-G, is asecond roller, T. The said roller is also provided with a coiled spring,U, one end of which is attached to the roller, and theother end of thespring is attached to the frame.

On one end of the roller G is a cog-wheel, V, and on one end of theroller T is a similar wheel, W, which meshes with the wheel V,

thereby causing the rollers to rotate simultaneously and at the samerate of speed when raising or lowering the lamp. By this construction Iprovide two springs and rollers to the lamp-hanger, and thus double itspower and adapt the same to be used for suspending and raising andlowering heavy lamps.

It will not be necessary to provide dogs to engage the addedspring-roller, as the dogs K of the roller G will be found sufiicient tolock both of the geared rollers; but any desired number of the said dogsmay be employed.

Having thus described my invention, I claim 1. The combination, in alamp-hanger, of

the frame having the opening D at one end, and the slot E extending fromthe edge into the said opening, and the hollow stud (J at the other end,the removable block F, adapted to fit in theslot E below the opening D,and the spring roller or drum having one end jour-- naled in the hollowstud G, and the other end journaled in the opening D, substantially asdescribed.

2. The combination, in alamp-hanger, of

the rotating drums or roller, the spring coiled I thereon, andstheelevating-chainscoiled in the contrary direction on the roller, and thedogs or detentsto arrestthe rotation of the roller,

with the shaft 0 journaled below the roller,

and having the right and left hand threads to guide theelevating-chainson the roller, sub,-

the rightand left hand threads, and the ele:

vating-ohains attached to the roller or drum .andpassed around thethreadsof the shaft 0, for-the purpose set forth, substantially as :described.

Intestimony-that I claim the foregoing asniy own I have hereto affixedmy signature-in presence of two witnesses.

GEORGE E. SOVEREIGN.

V Witnesses:

JOSEPH S. WAUGH, Amos 0. RATHBUN.

